Improved concrete for paving and for other purposes



JULIUS EDMUND DOTOH, OF WASHINGTON, DISTRICT OF COLUMBIA.

Letterr Pateut No. 97,893, dated December 14, 1869; antedatvlzl October14, 1869.

IMPROVEDCONCRETE FOR PAVING AND FOR OTHER PURPOSES.

'lhle Schedule referred to in these Letters Patent and making int of thesame.

170 all whom it may, concern Be it known that I, JULrus EDMUND Dome, of\Vashington, Districmof Columbia, have invented an Improved (lonoretefor, Paving, Roofing, and other technical Purposes; and I do herebydeclare that the following is a full anl eicact description thereof.

The nature of my invention consists in mixing asphaltum orfbitum ea! orpine-tar, pitcher resins, or any e rner-mem non-, w1tl "siicn' animarorvegetable fibrous We as caube most 'easily procured, such as sawdllsspent tan-bark, straw, cloth- 1 first saturate with linseeilfi sidunm,or other boiled oils. To cheapeIi-it, Iiysg sometimes peat or turf, oranthracite-coal ashes,.0r hydraulic'cement, &c.

The material will be best when some of the above fibrous materials,aremixed with one or more of the hydrocarbons to the exclusion of sandor any other mineral or cement.

The fibrous substances to be used are rendered noni ombustible by theintimate connection and saturation with the hydrocarbons during boiling,but I can render them still more so byimpregnatiug them first with anyof the metallic salts known to possess that propert i w is a pavement,this concrete will combine all the advantages of .a wooden pavement anda concrete, while some of the disadvantages from each separately areavoided.

I Insome instances, I treat the hydrocarbons with sulphur, eitherpowdered or in the fluid state.

tinuous mass, or I tiles, slates, 856. 1 l v Imakea foundation forstreets and sidewalks of either beton, gravel,"6i'""br6kefi stone, andsometimes I use for the same purpose facines, covered with furnnonld andpress it into blocks,

sit-ion on any existingpayedstreet or dirt-road.

cureliy Letters Patent, is

ter, such as tan-bark, sawdust, flock, wool-waste, straw, ,or similarmaterial, either in a dry state ,or the asphaltum, coal-tar, pitch,resin, or any other hydrocarbon, either used alone or in combinationwith peat, turf, coal-ashes, cinder, gravel, broken stone, sand,hydraulic cement, gypsum, infusorial earths, slate,

marble-dust, brick-dust, or any other mineral.

2. The treatment of this 'mixturewith the fluid state'or dry. e 3.A'foundatiufor streets and sidewalks, of, fascines, with slag or cementon the top. JULIUS EDMUND DOTOH.

Witnesses:

OHAs.. (1oNs. QALLAN,

J. W. NVALSH:

I employ and apply this mixture either in one c0n- Inaee=siag'w'cemeut;andsonretiiiis 1.1a, mycompo- WhatI cIaIm as my invention, and desire tose-- 1. The mixture of fibrous animal or vegetable matsametreated withboiled linseed or other oils, with sulphur, in

